Brakes locked on Holiday Rambler

KPruitt wrote:
Mechanic came over, spent about 4 hours working on getting brakes free. Pulled rear tires to get brakes to release, told me to block tires and not use parking brake when RV sets for a period of time. So after all that and 400 Dollars to repair I am now fixed.......

Unfortunately, the parking brake will still set when air bleeds down.

Fred

Mechanic came over, spent about 4 hours working on getting brakes free. Pulled rear tires to get brakes to release, told me to block tires and not use parking brake when RV sets for a period of time. So after all that and 400 Dollars to repair I am now fixed.......

FWIW since I started doing the Air Brake System checks I've not had stuck shoe.

My 2006 Holiday Ambassador has drum brakes. If it sits a month or more with high humidity, the shoes (metallic I think) do rust to the drums. I gas it in D, gas in R, and back and forth till the rig will go! Haven't broken anything YET! Brakes are probably slightly warm when I park.

Still stuck, have will call in Mobil mechanic to help fix

Wonder if the OP is still stuck???:h

Bobbo wrote:
Going forward pulls brake shoes tighter. Going in reverse pushes them looser.

This is true if it's a floating mounting system... usually has an adjusting mechanism opposite the activating mechanism. Class 6-8 drum brakes are usually pin mounted... not floating so no difference in direction.

Going forward pulls brake shoes tighter. Going in reverse pushes them looser.

Have a much better chance of breaking them loose by hitting the accelerator pedal while in reverse. Not "drive". Tough to do but always worked for me.

When you apply and release the parking brake do you hear the air exhausting?? If not then could be tiny diaphragm in emergency quick release valve has stock.